1263520 has 48 divisors (see below), whose sum is σ = 3061800. Its totient is φ = 492544.

The previous prime is 1263511. The next prime is 1263539. The reversal of 1263520 is 253621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 898704 + 364816 = 948^2 + 604^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8406 + ... + 8554.

2^1263520 is an apocalyptic number.

1263520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530900).

1263520 is an abundant number, since it is smaller than the sum of its proper divisors (1798280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263520 is a wasteful number, since it uses less digits than its factorization.

1263520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1263520 is about 1124.0640551143. The cubic root of 1263520 is about 108.1087154020.

The spelling of 1263520 in words is "one million, two hundred sixty-three thousand, five hundred twenty".